A method of testing a software program may include generating a test driver by assigning concrete values to input variables of a software program. The method may also include assigning symbolic source set elements to the input variables of the software program to generate a data structure based on the symbolic source set elements. The method may also include symbolically executing a current instruction of the software program based on the concrete values and symbolic source set elements assigned to the input variables of the software program and performing data source analysis on the current instruction of the software program based on symbolic execution of the current instruction.